Oven-door mechanism



the present sraras PATENT ortica.

JOHN T. HUECKEL, OF BELLEVILLE, ILLINOIS.

OVEN-DOOR MECHANISM.

Application iiled August 30, 1926. Serial No. 132,355.

This invention relates to oven door mechanism designed and arranged to i'unction in connection with a downwardly swinging or drop door of an oven to counterbalance or support in part the weight of the door.

An object ot the invention is to provide improved mechanism for use in conn-ection with oven doors of the drop type which will function to support the door in closed position and to yield to permit the door to be opened and, during movement of the door to open position, will counterbalance or support in part the weight of the door and prevent the door from moving to its supporting abutment with such force as to damage or break any of the parts, and which also acts on closing movement of the door as an actuator to aid in the movement of the door to closed position. v

Another object or" the invention is to provide an improved counterbalance mechanism for oven doors mounted in connection and combined therewith in such a way that f the mechanism is readily accessible for any desired purposes, such as replacement or repair of damaged parts.

Another object of the invention is to provide an improved mechanism for use in connection with oven doors comprising a compression spring having a novel connection with the voven door and functioning in the advantageous manner herein disclosed, reference being had to the accompanying drawing, in which Fig. 1 is a front elevation oit a part of an oven door and door :trame having my invention in connection therewith.

Fig. 2 is an enlarged view, the spring housing being in section.

Fig. 3 is an enlarged sectional View at right angles to that of Fig. 2.

The door frame 1 and door 2, except for their novel connection and association with invention, are of usual construction, the door being hinged to the frame at its lower edge for downward and outward swinging movement from closed to open position. In thepresent case one of the door hinge projections 3 is pivotally seated in a notch 4. in the door frame and on its outer end is provided with an integral crank web 5 from which the crank arm 6 extends. In closed position of the door the web 5 inclines upwardly and toward the ront of the door and swings downwardly with the door when the door is opened. In open position the door is approximately horizontal as indicated by dotted lin-es in Fig. 3.

The coil spring 7 is of the compression type and is connected with the crank arm 6 by an approximately U-shaped wire 8, the loop of which engages the arm 6 and the two arms of which wire extend through the spring 7 and are provided with hooks 9 on their ends engaging the opposite end of the spring 7. Similarly the spring 7 is connected with a stationary support 10 by a U-shaped wire 11, the loop of which engages said support 10 and the arms of which eX- tend through the spring 7 and are connected with the opposite end of said spring by hooks 12. Thus, it will be seen that the power of the spring 7 is exerted to support the door in closed position and to resist the tendency of the door to drop when the door is swung downwardly to open position.

The support 10 is in the form of a hook (Fig. 3) which prevents the wire 11 Jfrom becoming disconnected, and the end oi the crank 6 is provided with projections 13 preventing the wire 8 from becoming detached from said crank. The hook 10 is rigid or integral with a plate 14 secured to the frame of the door by stove bolts 15.

This entire mechanism is confined in a housing of which the frame 1 forms one wall, the other wall comprising a removable dished plate 16 having its upper end provided with a projection 17 engaging under an adjacent part of the door frame and having its lower end attached tothe door frame by a stove bolt 18. The side of the housing wall 16 that is toward the door serves to prevent displacement of the pivot 3 from its seat et and to permit free action thereof in opening and closing the door. The lower end of the housing plate 1G is provided with an abutment shoulder 19 extending laterally to position to function as an abutment whereon the door is supported in approXimat-ely horizontal open position. The housing plate is readily removable to afford access to the enclosed mechanism.

From the forego-ing it will be seen that my invention functions to obtainfall of its intended objects and purposes, may be manufactured and installed without great'cost, and any of the parts thereof that become worn or damaged may be easily replaced.

The specific construction, relationship and dimensions of the parts may be varied as required to meet the needs tor which the invention is intended and Without departure from the nature and principle ot the invention.

l claim:

l. rinhe combination with an oven door traine and a door hinged in said traine, ci a crank rigid With the door and extending` laterally above the plane of the hinge axis, a: hook rigid with the trame, a spring, and compression devices for said spring connected with said crank and said hook respectively.

2. The combination with an oven door trame and a door hinged in said frame, ot a crank rigid with the door and extending laterally above the plane of the hinge axis, a hook rigid with the trame, a compression spring betiveen said crank and said hook, and compression devices connected with the opposite ends ot said spring and extending longitudinally through saidV spring and connected with said crank and said hook, respectively.

3. The combination with traine and a door hinged in said trame, of a crank rigid with the door and extending laterally above the plane oi the vhinge axis, a projection rigid with the trame, a' coiled compression spring having one end toward said cra-nk and the opposite end toward said projection, and compression devicesconnected with the ends or" said spring and extending longitudinally through said spring and connected with said crank and said projection, respectively.

4l. rl'he con'ibina't-ion with an oven door trame and a door hinged in said trame, oi a crank rigid with the door and extending lateraily above the plane oi the hinge axis, a projection rigid with the trame, a coiled compression spring having one end toward said c ank and the opposite end toward said projection, compression devices connected With the ends or' said spring and extendii'ig .longitudinally through said spring and connected with said crank and said projection, respectively, .a housing tor said .sring attached toithe trame, and a supporting abutment for the door adjacent to said housing'.

5. The combination with an oven door trame and a door hinged in' said tramepo't a crank rigid with the door and extending lai'.- erally above the pla-ne of the hinge axis, a projection rigid With Athe Atrame, a ,coiled compression. spring between vand having its ends toward said crank andsaid projection respectively, and compression devices *for said rspring' connected lwith said crank and said projection respectively, n the compression device connected ivi-th thecrank being connected withfthe end of tlieispring .toward said projection and the compression device an oven door connected with said projection being Aconnected With the end ot' the spring toward said crank.

5. The combination with an oven door traine and a door Y,hinged in said frame, ot

a crank rigid with the door and extending laterally .above the plane ot the hinge axis, a projection rigid With the tra-me, a coiled compression spring `between and having its ends toward said crank and said projection respectively, compression devices for said spring` connected With said crank and said projection respectively, the compression ccvice connected with the crank "being connected with the end ot the spring toward said projection and the compression-`device connected With said projection being con- .nected With the end ot the spring toward said crank, and a housing for said spring attached to said frame.

7. The combination With an `oven door trame and a door hinged in said frame, or" a crank rigid with said door and extending laterally above the plane of the `hinge axis, a projection rigid With the trame, a coiled compression spring between and having its ends toward said crank and said projection respectively, compression devices for said spring connected with said crank and rsaid projection respectively, thecompression device connected with the crank being connected With the end of the spring toward said projection and the compression device connected With said projection being connected with the end `oi" the spring toward said crank, a housing for said spring attached t-o saidtrame, and a supporting abutment for the door rigid with said housing.

8. The combination with an oven door frame and a door hinged in said frame, of a crank Vrigid with the door and extending laterally above the plane of the hinge axis, a projection rigid with the frame, a coiled compression spring between and 'having its ends toward said crank and said projection respectively, compression devices for said spring connected With said crank and said projection respectively, the compression device connected with the crank being connec'ted with the end Aot the spring toward said projection andthe compression device connected with said projection being connected with the end ofthe spring tovvard said crank, and La ,housing `for said spring removably attached to Tthe ,frame.,anfdfhold'-` ingthedoor in hingedconnection Withthe trame.

A9. The combination With an oven fdoor 'frameanda door hinged 1in saidjframe, Qt' ,a crank rigid with the .door and vextending laterally above the plane fof thehingeaxis, a projection rigid `with theframe, 'aco-iled compression spring-between and` having l its ends toward .Said.c rank ,andes-id `p njct'on respectively, compression 'devices jfor said spring connected with said crank and said projection respectively, the compressionde- 'vice connected with the crank being connected with the end of the spring toward said projection and the compression device connected with Said projection being connected with the end of the spring toward said crank, a housing for said spring removably attached to the frame and holding the dool` in hinged connection With the traine, and a supporting abutment for the door integral with said housing.

JOI-IN T. HUECKEL. 

